I was really looking forward to this so I could stop using github themes (which get disabled every time NC gets upgraded). However, enabling it doesn’t appear to do anything (with no other themes applied). I’ve tried opening an incognito browser to ensure that it wasn’t a cache issue, but nothing seems to turn it on. Am I missing something?

Switched from Apache2 to NGINX for performance testing, and the theme switcher started working on NGINX (standard, Nextcloud suggested style installations for both web servers). It doesn’t hold very well over mobile view (changes, but then reverts on a page change), but the switcher does work on NGINX for normal web browser desktop views.

OK. I think I figured out what the culprit is. I was having the issue with the accessibility dark theme too. It was working, then got busted. I gave up. I updated to 14.0.1. What the deuce? It is working. But, sad trombone, it broke again shortly.

Turns out if you run occ maintenance:update:htaccess it will dork it up. I deleted everything after the # marker that looked like it indicated where that command did its updates and lo’ and behold, the dark theme is working.